Double face mechanical seal device for sand pump

Abstract

The application discloses a double-end-face mechanical sealing device for a sand pump, and has the technical scheme as follows: a transmission pipe is internally provided with a fixed ring, the top surface and the bottom surface of the fixed ring are respectively provided with a plurality of first springs, the top surface and the bottom surface of the fixed ring are respectively provided with two extrusion rings, the outer surface of the extrusion ring is fixedly provided with an anti-skid ring, the outer wall surface of the extrusion ring is movably connected with the inner wall surface of the transmission pipe, and the extrusion ring is fixedly connected with the first springs. Through the cooperation of the transmission pipe, the fixed ring, the first springs, the extrusion rings, the anti-skid rings, the sliding grooves, the sliding blocks, the mounting rings, the first placing rings, the first sealing rings, the second placing rings and the second sealing rings, the medium inlet and outlet of the sand pump can be sealed, and the leakage of the medium transmitted by the sand pump due to the gaps in the sealing device can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical seal, in particular to a double-end-face mechanical seal device for sand pump. BACKGROUND

[0002] The sand pump is composed of a volute, an impeller, a guard plate, a pump cover, a bracket and a bearing assembly, and is coaxial with the motor. The stirring impeller of the pump can suck out the sludge deposited under water. When the pump is running, the motor shaft drives the wheel to rotate, and the energy is transmitted to the slurry medium to form a certain flow rate. The slurry conveying is to drive the solid flow.

[0003] In the prior art, the mechanical seal of the sand pump is mostly single-end-face mechanical seal. Most of the working elements of the mechanical seal work in the mud environment. At this time, the working elements in the mechanical seal may be worn and corroded after long-time work of the sand pump. After wear, there may be gaps, so the transmission medium in the sand pump may cause leakage. SUMMARY

[0004] In view of the defects of the prior art, the present application provides a double-end-face mechanical seal device for sand pump, which solves the problem that the mechanical seal of the sand pump is mostly single-end-face mechanical seal, and most of the working elements of the mechanical seal work in the mud environment. At this time, the working elements in the mechanical seal may be worn and corroded after long-time work of the sand pump. After wear, there may be gaps, so the transmission medium in the sand pump may cause leakage.

[0005] The above technical purpose of the present application is realized by the following technical scheme:

[0006] The utility model provides a kind of double end face mechanical sealing device for sand pump, including transmission pipe, the inner wall surface of the transmission pipe is fixedly sleeved with fixed ring, the top surface and bottom surface of the fixed ring are respectively fixedly installed with a plurality of first springs, the top surface and bottom surface of the fixed ring are respectively provided with two extrusion rings, the outer circular surface of the extrusion ring is fixedly sleeved with anti-skid ring, the outer wall surface of extrusion ring is movably sleeved with the inner wall surface of the transmission pipe, and the extrusion ring is fixedly installed with the first spring;Sealing assembly, the inner wall surface of the transmission pipe is provided with sealing assembly, for the inlet and outlet pipe of sand pump is sealed, the sealing assembly includes two sliding grooves, two the sliding groove is all set in the inner wall surface of the transmission pipe, the outer wall surface of extrusion ring is fixedly installed with a plurality of sliding blocks, every two the sliding block is a group, every group the sliding block is movably sleeved with the sliding groove, the top surface and bottom surface of the transmission pipe are provided with mounting ring, the inner wall surface of the mounting ring in upper portion is movably sleeved with first placement ring, the outer wall surface of the first placement ring is movably sleeved with first sealing ring, the inner wall surface of the mounting ring in lower portion is movably sleeved with second placement ring, and the outer wall surface of the second placement ring is movably sleeved with second sealing ring.

[0007] By adopting the above technical scheme, through the mutual cooperation of the transmission pipe, fixed ring, first spring, extrusion ring, anti-skid ring, sliding groove, sliding block, mounting ring, first placement ring, first sealing ring, second placement ring and second sealing ring, the inlet and outlet of the sand pump medium are sealed, and the gap of the sealing device is avoided to cause the leakage of the medium transmitted by the sand pump.

[0008] Preferably, the top surface of the mounting ring is provided with two placement grooves, the inner bottom surface of the placement groove is provided with a threaded hole, the inner wall surface of the threaded hole is threadedly connected with a bolt, and the top surface of the transmission pipe is provided with two threaded grooves.

[0009] By adopting the above technical scheme, the first sealing ring groove is provided, so that the staff can install the transmission pipe and the mounting ring, and the staff can also disassemble and replace them after a long time of use.

[0010] Preferably, the outer wall surface of the first placement ring is provided with a first installation groove, the inner portion of the first installation groove is movably sleeved with the first sealing ring, the outer wall surface of the second placement ring is provided with two second installation grooves, and the inner portion of the second installation groove is movably sleeved with the second sealing ring.

[0011] By adopting the above technical scheme, the second installation groove is provided, the first sealing ring and the second sealing ring are respectively clamped into the first installation groove and the second installation groove by the staff, so as to prevent the first sealing ring and the second sealing ring from sliding off the outer ring of the first placement ring and the second placement ring.

[0012] Preferably, two positioning columns are fixedly installed in the inner part of the sliding groove, and two sliding holes are formed in the top surface of the sliding block, and the inner circular wall surface of the sliding hole movably sleeves the outer circular wall surface of the positioning column.

[0013] By adopting the above technical scheme, the positioning column is arranged to limit the sliding block, so that the sliding block is prevented from falling off when the extrusion ring moves.

[0014] Preferably, a plurality of installation grooves are formed in the outer circular wall surface of the positioning column, a second spring is fixedly installed at one end of the inner part of the installation groove, a clamping block is arranged on the inner circular wall surface of the installation groove, the clamping block is fixedly installed with the second spring, a plurality of clamping grooves are formed in the inner circular wall surface of the sliding hole, and the inner circular wall surface of the clamping groove movably sleeves the outer circular wall surface of the clamping block.

[0015] By adopting the above technical scheme, when the worker moves the extrusion ring, the clamping block is arranged to slide into the clamping groove, so that the extrusion ring is limited and prevented from shaking in the transmission pipe.

[0016] Preferably, two moving holes are formed in the outer circular wall surface of the installation ring, a pulling column movably sleeves the inner circular wall surface of the moving hole, two sliding grooves are formed in the inner circular wall surface of the moving hole, two sliding blocks are fixedly installed on the outer circular wall surface of the pulling column, and the sliding blocks movably sleeve the sliding grooves.

[0017] By adopting the above technical scheme, when the pulling column slides in the moving hole, the sliding blocks are arranged to limit the pulling column, so that the pulling column is prevented from sliding out of the moving hole.

[0018] Preferably, a fixing rod is fixedly installed in the inner part of the sliding groove, and a positioning hole is formed in the outer circular wall surface of the sliding block, and the inner circular wall surface of the positioning hole movably sleeves the outer circular wall surface of the fixing rod.

[0019] By adopting the above technical scheme, the fixing rod is arranged to prevent the sliding block from falling off when the sliding block slides in the sliding groove.

[0020] Preferably, a third spring movably sleeves the outer circular wall surface of the fixing rod, and the outer circular wall surface of the sliding block is fixedly installed with the third spring.

[0021] By adopting the above technical scheme, when the worker slides the pulling column, the third spring is arranged to extrude and rebound, so that the pulling column moves back and forth to extrude and limit the object in the installation ring.

[0022] In summary, the present application mainly has the following beneficial effects:

[0023] Through the mutual cooperation of the transmission pipe, the fixing ring, the first spring, the extrusion ring, the anti-skid ring, the sliding groove, the sliding block, the mounting ring, the first placing ring, the first sealing ring, the second placing ring and the second sealing ring, the effect of sealing the sand pump medium inlet and outlet is achieved, and leakage of the sand pump transmission medium caused by gaps in the sealing device is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0025] Figure 2 is a schematic diagram of the extrusion ring structure of the present application;

[0026] Figure 3 is a schematic diagram of the first placing ring structure of the present application;

[0027] Figure 4 is Figure 2 a schematic diagram of the partial structure of A in the present application;

[0028] Figure 5 is Figure 2 a schematic diagram of the partial structure of B in the present application;

[0029] Figure 6 is Figure 2 a schematic diagram of the partial structure of C in the present application;

[0030] Figure 7 is Figure 2 a schematic diagram of the partial structure of D in the present application.

[0031] Reference signs: 1, transmission pipe; 2, fixing ring; 3, first spring; 4, extrusion ring; 5, sliding block; 6, sliding groove; 7, anti-skid ring; 8, mounting ring; 9, first placing ring; 10, first sealing ring; 11, second placing ring; 12, second sealing ring; 13, first mounting groove; 14, second mounting groove; 15, placing groove; 16, threaded hole; 17, bolt; 18, cross slot; 19, positioning column; 20, installation groove; 21, second spring; 22, clamping block; 23, sliding hole; 24, clamping groove; 25, pulling column; 26, moving hole; 27, sliding groove; 28, sliding block; 29, positioning hole; 30, fixing rod; 31, third spring; 32, threaded groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0033] Embodiment one

[0034] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 And Figure 7 A kind of double end face mechanical sealing device for sand pump, including transmission pipe 1, the inner wall surface of the transmission pipe 1 is fixedly sleeved with fixed ring 2, the top surface and bottom surface of fixed ring 2 are fixedly installed with several first springs 3 respectively, the top surface and bottom surface of fixed ring 2 are provided with two extrusion rings 4 respectively, the outer circular surface of extrusion ring 4 is fixedly sleeved with anti-skid ring 7, the outer wall surface of extrusion ring 4 is movably sleeved with the inner wall surface of transmission pipe 1, extrusion ring 4 is fixedly installed with first spring 3, the inner wall surface of transmission pipe 1 is provided with sealing assembly, for sealing the inlet and outlet pipe of sand pump, sealing assembly includes: two sliding grooves 6, two sliding grooves 6 are all opened in the inner wall surface of transmission pipe 1, the outer wall surface of extrusion ring 4 is fixedly installed with several sliding blocks 5, every two sliding blocks 5 are a group, every group of sliding block 5 is movably sleeved with sliding groove 6, the top surface and bottom surface of transmission pipe 1 are provided with mounting ring 8 respectively, the inner wall surface of the upper mounting ring 8 is movably sleeved with first placing ring 9, the outer wall surface of first placing ring 9 is movably sleeved with first sealing ring 10, the inner wall surface of the lower mounting ring 8 is movably sleeved with second placing ring 11, the outer wall surface of second placing ring 11 is movably sleeved with second sealing ring 12, by the setting of second sealing ring 12, when the staff needs to use sand pump to carry out material transmission work, at this time the staff places two mounting rings 8 on the upper and lower of transmission pipe 1 respectively, then rotates bolt 17 to make it pass through threaded hole 16 and enters threaded groove 32, then installs between transmission pipe 1 and mounting ring 8, at this time the staff places first placing ring 9 in mounting ring 8, and places second placing ring 11 in the lower mounting ring 8, then moves first placing ring 9 and second placing ring 11 inwards to make sliding block 5 move in sliding groove 6, i.e. extrusion ring 4 moves to make multiple first springs 3 extrude, at this time the staff pulls pull column 25 to make pull column 25 move outward, then sliding block 28 slides in sliding groove 27, then makes third spring 31 extrude and rebound to move to extrude and limit first placing ring 9 and second placing ring 11, then reaches the effect of sealing sand pump medium inlet and outlet, avoids the gap of sealing device to cause the leakage of sand pump transmission medium.

[0035] Embodiment two

[0036] Based on the above embodiment 1, reference Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 6The top surface of the mounting ring 8 is provided with two placing grooves 15, the inner bottom surface of the placing groove 15 is provided with a threaded hole 16, the inner circular wall surface of the threaded hole 16 is threadedly connected with a bolt 17, the top surface of the transmission pipe 1 is provided with two threaded grooves 32, the inner circular wall surface of the threaded groove 32 is threadedly connected with the outer circular wall surface of the bolt 17, the first sealing ring 10 is provided with a character slot 18, so that the staff can install the transmission pipe 1 and the mounting ring 8, and the staff can also disassemble and replace the transmission pipe 1 after long-term use. The outer circular wall surface of the first placing ring 9 is provided with a first mounting groove 13, the first mounting groove 13 is movably sleeved with the first sealing ring 10, the outer circular wall surface of the second placing ring 11 is provided with two second mounting grooves 14, the second mounting groove 14 is movably sleeved with the second sealing ring 12, the second mounting groove 14 is provided, the staff makes the first sealing ring 10 and the second sealing ring 12 respectively enter the first mounting groove 13 and the second mounting groove 14, so that the first sealing ring 10 and the second sealing ring 12 are prevented from sliding off from the outer ring of the first placing ring 9 and the second placing ring 11, and the inner part of the sliding groove 6 is fixedly installed with two positioning columns 19, the top surface of the sliding block 5 is provided with two sliding holes 23, the inner circular wall surface of the sliding hole 23 is movably sleeved with the outer circular wall surface of the positioning column 19, and the positioning column 19 is provided, so that the sliding block 5 is limited, and the sliding block 5 is prevented from falling off when the pressing ring 4 moves.

[0037] Example three

[0038] Based on the above-mentioned embodiments 1 or 2, reference Figure 1 、 Figure 2 、 Figure 5 and Figure 7 , the outer circular wall surface of the positioning column 19 is provided with a plurality of installation grooves 20, the inner end of the installation groove 20 is fixedly installed with a second spring 21, the inner circular wall surface of the installation groove 20 is provided with a clamping block 22, the clamping block 22 is fixedly installed with the second spring 21, the inner circular wall surface of the sliding hole 23 is provided with a plurality of clamping grooves 24, the inner circular wall surface of the clamping groove 24 is movably sleeved with the outer circular wall surface of the clamping block 22, the clamping block 22 is provided, and when the staff moves the pressing ring 4, the clamping block 22 is slidably clamped into the clamping groove 24, the pressing ring 4 is limited, and the pressing ring 4 is prevented from shaking in the transmission pipe 1, the outer circular wall surface of the mounting ring 8 is provided with two moving holes 26, the moving hole 26 is movably sleeved with a pulling column 25, the inner circular wall surface of the moving hole 26 is provided with two sliding grooves 27, the outer circular wall surface of the pulling column 25 is fixedly installed with two sliding blocks 28, the sliding block 28 is movably sleeved with the sliding groove 27, and the sliding block 28 is provided, so that the sliding block 28 is limited when the pulling column 25 slides in the moving hole 26, and the pulling column 25 is prevented from sliding off from the moving hole 26.

[0039] Example four

[0040] Based on the above-mentioned embodiments 1, 2 or 3, referenceFigure 1 、 Figure 2 、 Figure 5 and Figure 6 The inner part of the sliding groove 27 is fixedly provided with a fixing rod 30, and the outer circular wall surface of the sliding block 28 is provided with a positioning hole 29, and the inner circular wall surface of the positioning hole 29 is movably sleeved with the outer circular wall surface of the fixing rod 30. Through the setting of the fixing rod 30, the sliding block 28 is prevented from falling off when sliding in the sliding groove 27. The outer circular wall surface of the fixing rod 30 is movably sleeved with a third spring 31, and the outer circular wall surface of the sliding block 28 is fixedly provided with the third spring 31. Through the setting of the third spring 31, when the staff slides and pulls the pull column 25, the third spring 31 is extruded and rebounded to make the pull column 25 move back and forth to extrude and limit the object in the mounting ring 8.

[0041] Working principle: please refer to Figures 1-7 When the staff needs to use the sand pump to transport materials, at this time the staff places two mounting rings 8 above and below the transmission pipe 1, and then rotates the bolt 17 to make it pass through the threaded hole 16 and enter the threaded groove 32, thereby installing between the transmission pipe 1 and the mounting ring 8. At this time, the staff places the first placement ring 9 in the mounting ring 8, and places the second placement ring 11 in the mounting ring 8 below, and then moves the first placement ring 9 and the second placement ring 11 inward to make the sliding block 5 move in the sliding groove 6, that is, the extrusion ring 4 moves to make the plurality of first springs 3 extrude. At this time, the staff pulls the pull column 25 to make the pull column 25 move outward, and then the sliding block 28 slides in the sliding groove 27, thereby making the third spring 31 extrude and rebound to move to extrude and limit the first placement ring 9 and the second placement ring 11, thereby achieving the effect of sealing the sand pump medium inlet and outlet, avoiding the gap of the sealing device causing the medium of the sand pump to leak.

[0042] Through the setting of the first sealing ring 10 word groove 18, so that the staff between the transmission pipe 1 and the installation ring 8 installation, when long time use, also facilitate the staff to disassemble and replace, the staff makes the first sealing ring 10 and the second sealing ring 12 are respectively inserted into the first installation groove 13 and the second installation groove 14, prevent the first sealing ring 10 and the second sealing ring 12 from the first placement ring 9 and the second placement ring 11 from sliding off the outer ring, through the setting of the positioning column 19, make it to the sliding block 5 limit, prevent the extrusion ring 4 in the moving sliding block 5 cause off, when the staff moves the extrusion ring 4 makes its block 22 sliding card into the card slot 24, limit the extrusion ring 4, prevent the extrusion ring 4 in the transmission pipe 1 shake, when the pull column 25 in the moving hole 26 slide, make the sliding block 28 to its limit, prevent the pull column 25 from sliding off from the moving hole 26, through the setting of the fixed rod 30, prevent the sliding block 28 in the sliding slot 27 slide cause off, when the staff sliding pull column 25, make the third spring 31 extrusion rebound after the pull column 25 back and forth movement to the object in the installation ring 8 extrusion limit

[0043] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double face mechanical seal device for sand pumps, characterized in that, The utility model provides a sand pump, including: Transmission pipe (1), the inner circular wall surface of transmission pipe (1) is fixedly sleeved with fixed ring (2), the top surface and bottom surface of fixed ring (2) are fixedly installed with a plurality of first spring (3) respectively, the top surface and bottom surface of fixed ring (2) are provided with two extrusion rings (4) respectively, the outer circular surface of extrusion ring (4) is fixedly sleeved with antiskid ring (7), the outer circular wall surface of extrusion ring (4) is movably sleeved with the inner circular wall surface of transmission pipe (1), and extrusion ring (4) is fixedly installed with first spring (3); Sealing assembly, the inner circular wall surface of transmission pipe (1) is provided with sealing assembly, is used for sealing the inlet pipe of sand pump, sealing assembly includes: two sliding grooves (6), two sliding grooves (6) are all set up in the inner circular wall surface of transmission pipe (1), the outer circular wall surface of extrusion ring (4) is fixedly installed with a plurality of sliding blocks (5), every two sliding blocks (5) are a group, and every group sliding block (5) is movably sleeved with sliding groove (6), the top surface and bottom surface of transmission pipe (1) are provided with installation ring (8) respectively, the inner circular wall surface of installation ring (8) on top is movably sleeved with first placement ring (9), the outer circular wall surface of first placement ring (9) is movably sleeved with first sealing ring (10), the inner circular wall surface of installation ring (8) on bottom is movably sleeved with second placement ring (11), and the outer circular wall surface of second placement ring (11) is movably sleeved with second sealing ring (12); The outer circular wall surface of installation ring (8) is provided with two moving holes (26), the inner circular wall surface of moving hole (26) is movably sleeved with pull column (25), the inner circular wall surface of moving hole (26) is provided with two sliding grooves (27), the outer circular wall surface of pull column (25) is fixedly installed with two sliding blocks (28), and sliding block (28) is movably sleeved with sliding groove (27); The inside of sliding groove (27) is fixedly installed with fixed rod (30), and the outer circular wall surface of sliding block (28) is provided with positioning hole (29), the inner circular wall surface of positioning hole (29) is movably sleeved with the outer circular wall surface of fixed rod (30); The outer circular wall surface of fixed rod (30) is movably sleeved with third spring (31), and the outer circular wall surface of sliding block (28) is fixedly installed with third spring (31).

2. A double mechanical seal device for sand pump according to claim 1, characterized in that: The top surface of installation ring (8) is provided with two placement grooves (15), and the inside bottom surface of placement groove (15) is provided with threaded hole (16), the inner circular wall surface of threaded hole (16) is threadedly connected with bolt (17), the top surface of transmission pipe (1) is provided with two threaded grooves (32), and the inner circular wall surface of threaded groove (32) is threadedly connected with the outer circular wall surface of bolt (17).

3. A double mechanical seal device for sand pump according to claim 1, characterized in that: The outer circular wall surface of the first placement ring (9) is provided with a first mounting groove (13), the inside of the first mounting groove (13) is movably sleeved with the first sealing ring (10), the outer circular wall surface of the second placement ring (11) is provided with two second mounting grooves (14), and the inside of the second mounting groove (14) is movably sleeved with the second sealing ring (12).

4. A double mechanical seal device for sand pump according to claim 1, characterized in that: The inside of the sliding groove (6) is fixedly provided with two positioning columns (19), the top surface of the sliding block (5) is provided with two sliding holes (23), and the inner circular wall surface of the sliding hole (23) is movably sleeved with the outer circular wall surface of the positioning column (19).

5. A double mechanical seal device for sand pumps according to claim 4, characterized in that: The outer circular wall surface of the positioning column (19) is provided with a plurality of mounting grooves (20), one end of the inside of the mounting groove (20) is fixedly provided with a second spring (21), the inner circular wall surface of the mounting groove (20) is provided with a clamping block (22), the clamping block (22) is fixedly installed with the second spring (21), the inner circular wall surface of the sliding hole (23) is provided with a plurality of clamping grooves (24), and the inner circular wall surface of the clamping groove (24) is movably sleeved with the outer circular wall surface of the clamping block (22).

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